Optical recording system with optimal recording laser beam power control, and method and device for generating a mark formation effectiveness signal in an optical recording system

1. An optical recording system comprising: a laser light source operable so as to provide an incident recording light signal for recording information on an optical recording medium; an optical detector for detecting a reflected write pulse that is a reflection of the incident recording light signal from the optical recording medium; a signal generating device coupled to said optical detector and including an analog peak value detector for detecting a peak value of the reflected write pulse from said optical detector, at least one sample-hold circuit for sampling the reflected write pulse to obtain at least one amplitude value, a processor coupled to said analog peak value detector and said at least one sample-hold circuit, said processor generating a mark formation effectiveness signal according to the peak value from said analog peak value detector and said at least one amplitude value from said at least one sample-hold circuit, the mark formation effectiveness signal corresponding to the information recorded on the optical recording medium, an analog-to-digital converter that interconnects said analog peak value detector and said at least one sample-hold circuit to said processor, said analog-to-digital converter converting the peak value from said analog peak value detector and said at least one amplitude value from said at least one sample-hold circuit into digital form for subsequent reception by said processor, and a multiplexer for controlling connection of each of said analog peak value detector and said at least one sample-hold circuit to said analog-to-digital converter; and a light source controller coupled to said laser light source and said signal generating device, said light source controller controlling recording laser beam power of said laser light source according to the mark formation effectiveness signal from said signal generating device for optimum information recording.

2. The optical recording system as claimed in claim 1 , wherein said signal generating device further includes a timing controller connected to said analog peak value detector, said at least one sample-hold circuit and said multiplexer, said timing controller controlling duration of detection by said analog peak value detector, sampling duration of said at least one sample-hold circuit, and connecting operation of said multiplexer.

3. A signal generating device for generating a mark formation effectiveness signal in an optical recording system, the optical recording system including a laser light source operable so as to provide an incident recording light signal for recording information on an optical recording medium, an optical detector for detecting a reflected write pulse that is a reflection of the incident recording light signal from the optical recording medium, and a light source controller coupled to the laser light source for controlling recording laser beam power of the laser light source according to the mark formation effectiveness signal for optimum information recording, said signal generating device comprising: an analog peak value detector adapted to be coupled to the optical detector for detecting a peak value of the reflected write pulse from the optical detector; at least one sample-hold circuit adapted to be coupled to the optical detector for sampling the reflected write pulse to obtain at least one amplitude value; a processor coupled to said analog peak value detector and said at least one sample-hold circuit, said processor generating the mark formation effectiveness signal according to the peak value from said analog peak value detector and said at least one amplitude value from said at least one sample-hold circuit, the mark formation effectiveness signal corresponding to the information recorded on the optical recording medium, said processor being adapted to be coupled to the light source controller for providing the mark formation effectiveness signal to the light source controller; an analog-to-digital converter that interconnects said analog peak value detector and said at least one sample-hold circuit to said processor, said analog-to-digital converter converting the peak value from said analog peak value detector and said at least one amplitude value from said at least one sample-hold circuit into digital from for subsequent reception by said processor; and a multiplexer for controlling connection of each of said analog peak value detector and said at least one sample-hold circuit to said analog-to-digital converter.

4. The signal generating device as claimed in claim 3 , further comprising a timing controller connected to said analog peak value detector, said at least one sample-hold circuit and said multiplexer, said timing controller controlling duration of detection by said analog peak value detector, sampling duration of said at least one sample-hold circuit, and connecting operation of said multiplexer.